This is not a bug straightly but there are issues with matchmaking.
Problems with tournament are talked in many threads and I don't want to write about it. But in general when normal duels are matched:
1. Player has to wait for long. Probably to find someone with similar ELO (this is problem when ELO is high).
2. Right after one match with opponent X, I am matched again for a second fight with him. (Often)
3. Then after that match I am matched for the third fight with him. (Also often)
4. Then after that match I am matched for the fourth fight... (Not so often but happened more than once.)
This is fine when decks and skill is comparable. If one side is constantly losing, i.e. bad matchup - spell deck vs rush who doesn't stand a chance, it is annoying.
Playing the same deck constantly is also boring.
Problems with tournament are talked in many threads and I don't want to write about it. But in general when normal duels are matched:
1. Player has to wait for long. Probably to find someone with similar ELO (this is problem when ELO is high).
2. Right after one match with opponent X, I am matched again for a second fight with him. (Often)
3. Then after that match I am matched for the third fight with him. (Also often)
4. Then after that match I am matched for the fourth fight... (Not so often but happened more than once.)
This is fine when decks and skill is comparable. If one side is constantly losing, i.e. bad matchup - spell deck vs rush who doesn't stand a chance, it is annoying.
Playing the same deck constantly is also boring.